Plug cover



FIG. 1 is a perspective view of a plug cover showing the new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is bottom plan view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a front elevation view thereof; and,

FIG. 7 is a rear elevation view thereof.

The broken lines show portions of the plug cover that form no part of the claimed design. 

CLAIM The ornamental design for a plug cover, as shown and described. 